/Engine/Source/Runtime/CoreUObject/Public/UObject/Object.h
Get the size of the object/resource for use in memory tools or to display to artists/LDs in the Editor This is the simple version which just returns the total number of bytes used by this object.
The cumulative size of this object in memory
SIZE_T GetResourceSizeBytes ( [EResourceSizeMode::Type](API\Runtime\Core\ProfilingDebugging\EResourceSizeMode__Type) Mode )